Intermediate table for double shears



Sept. 30, '1930. L. c. LEICHNER INTERMEDIATE TABLE FOR DOUBLE SHEARS Filed Sept. 4, 1928 2 Sheets-Sheet l NW M A TTORNEYS Sept. 30, 1930. L. e. LEICHNER INTERMEDIATE TABLE FOR DOUBLE SHEARS Filed Sept. 4, 1928 2 Sheets-Sheet 2 INVENTOR. LUV-l J.

A TTORNEYS .Illllllllll I. J 1 l l I I l l Patented Sept. 30, 1930 v Ni-CITE} me a AT NT FI E ILEROY'G; rnrcnnlinfor nsnn inn; KENTUCKY, Assrerron TO THE'VAMERIICAN ROLLING" MILL comnnnmor rarnnnnrown, care, 'A CORFQRATIONOE 01110 7' minniunnmrn TA L FOR pouBLn'sHEAns j Application'fileii September 4,1928. Serial No. 303,682.

In [double shearin which is to say, the

process of shearing both' cn'ds'of a metallic is essential that there be somesupportbe veeir'th'e two or other sheet simultane'ously "t shear beds 501101 11116 sheetupon ahorizontal'plane, since as'willbe readily understood,

any substantial deflection will vary the length ofthe cut. Again in shearing iron'sheets it is quite essential that there be between the shears a .table which will be in the nature otfa conveyor or a surface over. WlilClltllQ sheet maybe moved. My invention addressed to suchintermediate tables.

Hitherto av chief problemconnected with intermediate tables has been" adjustability.

Itisessential in the double shearingjor ex ample ofirom tliatone shearbe movableup'onthe bed. to allow the length; of the sheared sheets to varyfrom five feet up to about; twelve feet ormore." The practice'has been to provide," for an intermediate table, a.

bracket attached toeach shear bedL VVhen.- ever the position of the movable shear was; changed to vary the out, these brackets had to be unbolted a'nd'bolted together in the new position. This'consunied agree deal of ti1ne,'and was particularly disadvantageous in itsapplicationto the double cut-oil shears at theend of/the so-called continw ous strip i'processes in the iron andsteeliir.

dustry, Here, for continuous pickliiig annealing or thefilile. sheets are stitched or otherwise fastenedtogether and inthis fash- '5 ion lcdjthrough Various lnstrumentallties at.

does not interfere withthe speedy adjust.

ment of shear distances;

lttis anoth'er object ofmy invention to pro"-v vid e an intermediate table w-hich" auton1ati-: cal ly adjustsitselr" to varying-shear dis-i tanceasothat ithe settijnc' of the shears fora li' ll erent out involves only the shifting of the movablet shear along' thebed, and: does" not involve"alltoiwthose:labor and time con'-:

suming operations hitherto involved'in tale ing apart and putting together the t'able. It should be noted also that since double shears are frequently used for metallic sheets whichare or are intended to be made into highly finished sheets an intermediate table comprising rails or a flat metallic surface'over which the sheets are. drawn is unsuitable because ofthe' mai'ring of the sheet surface. Attemptsto combine rollers 01' oth= er conveyor mechanism*with old shear tables have complicated their adjustinent as will be readily understood. It istheref'ore still another object of my inventionto'provide in an intermediate table of my newjtype, means for conveying" the stock withoutman" ringaits surface.

These? and other objects of invention.

whichwill be apparent to one skilled in the asapplicable to other double' and/or adjustable mechanism such as'punches; drill presses or, many OthersJand thatit is of importance alone as'an adjustable conveyor. Reference is hereb ypmade tothe drawings which forma part'o'f this specification.

In the drawings: t Figure 1 is aside elevation,partially dia ,Q rammatic, of aidouble shear mechanism embodyingniy intermediate table.

Figurel is an enlarged View of the chain. 1 Figure 2 is a plan of the same mechanism. I I have shown genera-lly'at 1 the bed o'fa double cut-off shear upon which is mounted a fixed shear2 and amovable shear 3' which will be thought of as equipped with the well' knownzmechanism whereby it maybe moved toward or away fromthe fixed shear 2, along the bed, and fixed in place where desired Such mechanism forms no part of my invention.

My new intermediate table comprises two strands of steel chain indicated broadly as a: and 5, which may be set at any desired center distance according to the width of the sheet to be run. The chain strands comprise links 5*, pins 6 and collars 7. There are two collars upon each pin, and intermediate them l. mount a disc 8, preferably of fibre so as not to scratch the sheets conveyed thereover. One of these discs is mounted at each joint of each strand of the chain, and it will be clear that the two strands will together form a conveyor if stretched taut and parallel. The discs, of course, are free to roll idle upon the connecting pins.

The fixed shear 2 has a fixed shear table, adjacent which I fasten brackets 10 to which the chain-strand ends are attached.

The chain strands are adapted to be supported by tension intm'n'mdiate the shears; but upon the movable shear 3 1 provide a sup port therefor which is adapted to hold the clfective end of my table in line with the shear table top 11 of the movable shear. This support, which I have indicated broadly by the numeral 12 is in the nature of a guide over which the chain sgrand will slip, and which serves to carry the chain strand down below the level of the table 11, by

changing its. direction against tension. A second guide is provided to change the direction of the chain strand and bring it back to the horizontal at a new level. The general purpose of these guides is to get the unused or ineffective end of my chain strands out of the way of the movable shear shear-table 11 while permitting the tension exerted upon the chain strands to be effective in holding the intermediate-table-forming portions in position. The guide 12, of course also supports the end of my intermediate table at the right height.

The guide-supports are conveniently made comprising arcuate supporting parts 13 and 14 which are fastened to an S shaped member 16 one end of which is attached directly to the frame of the movable shear While the other may be supported by a strut 17. 'This strut may be made adjustable, if desired, to vary theheight of the intermediate table end. The arcuate support 13 has its convex portion disposed upwardly, while 14E is convex downnuirdly. These supports engage the chain strands, or the cables next to be described in such a way that they may be tensioned thereagainst, but may be moved thereover when the movable shear is shifted. Portions 18 may abut the sides of the member 13 so as to form a channel holding the chains against sidewise slippage, and a similar arrangement may be made to hold the chain strands or cables upon the member 14. The entire guiding and supporting mechanism, may, if desired, be constructed of heavy angle stock; butits construction may be varied without departing from the spirit of this invention. Its essential features are the arouate guide-supports, or equivalent means for the purpose, and means for holding the guide supports in the proper location.

Tension is exerted upon the chain strands by cables. These I prefer to make of wire rope, out to the proper length, and formed with loops at either end. One of these loops passes about a connecting pin at the end of each chain strand, while the other engages a hook-bolt or eye-bolt 19. This bolt passes through an abutment upon the bed 1. A coiled spring2l is placed about the shank of the bolt. It presses against the abutment at one end, and at the other is surmounted by a washer 22 held in place upon the bolt 19 by a nut 23. The abutment 2O rigidly mounted upon the bed, and is suitably braced. It may be conveniently constructed of heavy angle and sheet stock as shown; but it may have other constructions. It is cssentiuliy a n'ieans against which the chain strands may be tensioned. Further, the tensiouing means may be varied at will, and instead of cable, spring and eyebolt, may comprise such other well-known equivalents as may be desired. Vith the mechanism which I have described, it will be evident that when the nut 23 is tightened upon the bolt the cables 24, it of proper length, will pull upon the chain strand ends, and that the chain strands may be tensioned to any degree desired. against the guide-supports 13, 1 1 and the brackets 10. It will be further evident that when so tensioned the chain strands form an effect 1e in termediate table 4 for the double shears-1.

The movable shear 3 can now be moved either toward or away from the fixed shear along the bed. lVhen this is done, the chain strands slip over the guide supports and the effective length of the intcrn'iediate table which. they form, changes auton'iatically, but without change of tension. The operator does nothing toward the adjustment of the tal. lc other than tightening the tension whenever the tension has become too loose, by tal'- ing up the nut against the spring 21.

Various modifications of my invention will be within the purview of those skilled in the art to construct without departing from the spirit of my invention.

Having described a preferred embodiment of it, what I claim as new and desire to secure by Letters Patent is: i

1. An intermediate table for coacting mechanisms which include a fixed mechanism and a mechanism movable with relation thereto, said intermediate table comprising fieXible link members and tensioning means therefor whereby they may be supported in table-like formation.

2. An intern'iediate table of variable s r-regent length for coactin-g iieehanisnjsof variable 1 distance from'each other, one of said mechanisms being relativelyfixed theother movable, said table comprising flexible link member's attached at one end to the. fined mechanism andv tensione'd independently gif the movable mechanism. 7 i i j" An, intermediate table for cojacting reference to'tlie other comprising 'alink con- 'str'uct ion fastened atoneendltotlie imniov- "able mechanism and tensionedat the other independently of the" movable "mechanism and a support on saidmovable mechanism to hold said l nk construction" at the-proper height.

other relatively movable comprising a link construction fasten ed at" one endfto" the im' movable mechanismand tensionedl at "the other independently of the. movable*mechanism and a support on said movable mechanism to holdsaid link-constrnction atthe proper height, saidlink construction adapt- "ed to slide oversaidsu'pport' as said-movable mechanism is moved Wherebythe jef fective length" of'sai d table may be changed.

5; An. intermediate table for coacti ng mechanisms {movable frelative-ly to" each other, which comprises f, a link construction and tensioning manswnereb 'sai'd'flink construction is held iirtable-like. formation,

said tensioning means being independentof one of said mechan sms. l

6. An: intermediate; table for c'o'acting, mechanisms movable relatively to each other which comprises "a link construction andQa tensioning fme ans "therefor independent of one of said mechanisms, a support for said table "adapted to ii pl'iold effective length thereof at the proper height,' aiid adapted to lead out of theivay the inefiec'tive length.

lead out of the Way the ineffective length thereof Without destroying the tension thereof, said support beingmountednpon one of saidyineclianisms 'Wherelo y 'said mechanisms may be moved to var ing distances from each otherithercby'afi'ecting the. effective length of 'saifd table, vvit'hont destroying the tension thereof and without the necessity offindependent adjustmen'tf 8. An intermediate table, for .coacting mechanisms movable relatively to" each other the immovable mechanism and tensioning 4. An intermediate;table for co-aoting mechanisms one 'of which is fixed and the means for saidchain strands whereby they may be held intablje like formationy'means for conducting the ineffective lengths of said chainstrands out'of the Way Without defstroying the tension thereof "whereby: the movable mechanism may ,loe moved, with refere noeto the fixed mechanismwithout varying the adjustment of'said tabl'e.

9 .-In -a device comprising coacting mechanisms, one fixed on a bed, the other movable on saidbed, so as to 'varythe'distance between said mechanism'gan interme- 'diate" table therefor comprising a llllk construction' rigidly fixedat oneend and ten- 'sioned at the other with respect to said bed, mean'sfor holdi'ng s'aid table at'the proper height with reference to said coactingmeehanis'ms and movable means for conducting out of the viay the inefie'ctive-lengthot:said

link construction Without interrupting the,

tension thereof, whereby said movable mechanism maybe-moved upon said bed and .wvhe'reby thejefi'ective length of Said table may be varied with said movement'without interrupting the adjustment thereof.

"10. Ina device comprising a bed, a fixed coacting mechanism and i a movable coact ing mechanism thereon, {an intermediate table between said-mechanisms comprising a linkconstr'uction aflixed at one end tosaid .5

immovable mechanism, an abutment on said bed beyond said movable mechanism, tensioning means betvveen said abutment at the other end of said link construction ivhereby said link constructionmaybe held in table like formation, means for supporting said link construction atthe proper heightand means for conducting out of the Way the ineflective length of said link construction.

llIn a" device comprising abed, a fixed coacting mechanism and a m'ovableyc'oacting mechanism thereon, an intermediate table between said mechanisms comprising I a link construction ailixed atone end to said immovable mechanism,- an, abutment on said bed beyond said movable mechanismytensioning means betvveen said abutment at the other end of'said link construction whereby said link construction'may' be held in table like formation, means forsupporting said "link construction at the proper height and means for conducting out of the Way the ineffective length of said l nk construction, said means affixed to said moi-able mechanism, said link construction adapted to ride over said means whereby Whensaid movable mechanism is moved, the eflectlve-length of ing theadjustment thereof;

said table Will be varied withoutdisturb- 12'. In a device comprising a bBChfiifi'XQC coacting' mechanism thereon and a movable coacting mechanism thereon, an-interm'ed'i j ate table for said mechanisms comprising two strands of chain, brackets upon said :fi-X'ed mechanism adaptedto hold one endof loo said chain at table height, means on said movable mechanism adapted to hold said chains at table height and to conduct out of the Way the ineliective length of said chains, an abut-ment on said bed beyond said movable member and tensioning means for tensioning the other end of said chains against said abutment, said chains adapted to ride over said supporting and conducting means during movement of said movable member.

13. In a device comprising a bed, a fixed coacting mechanism thereon, a movable coaeting mechanism thereon and an intermediate table variable without adjustment as the distance between said mechanisms is varied, said table comprising chain strands attached at one end to brackets iir ed at table height upon said immovable mechanism, an arcuate support on said movable mechanism adapted to hold said chain strands intermediate their ends at table height on said movable mechanism and adapted to permit a change in directionot said chain strands, a second obverse arcuate support upon said movable mechanism adapted to bring the direction of said chain strands back to the original but upon a different plane, an abutment upon said bed, tensioning means afiixed to said abutment and to the other end of said chain strands adapted to tension said chain strands and to hold that portion of them lying between said brackets and said supports in table-like formation, said chain strands adapted to slide over said arcuate supports when said movable mechanism is moved, whereby by the movement of said movable mechanism the eliective length of said table may be varied automatically.

14. In a device comprising a bed, a lined. eoacting mechanism thereon, a movable co acting mechanism thereon and an intermediate table variable without adjustment, as the distance between said mechanisms is varied, said table comprising chain strands attached at one end to brackets fixed at table height upon said imn'iovable mechai'iism. an arcuate support on said movable mechanism adapted to hold. said chain strands intermediate their ends at table height on said movable mechanism and adapted to permit a change in direction of said chain strands, a second obverse arcuate support upon said movable mechanism adapted to bring the direction of said. chain strands back to the original but upon a diii'erent plane, an abnh ment upon said bed, tensioning means afiixed to said abutment and to the other end of d. chain strands adapted to tension said cham strands and to hold that portion of them lying between said brackets and said supports in table-like formation, said chain strands adapted to slide over saidarcuate sup ts when said movable mechanism is moved, whereby the movement of said movable .mechanism the effective length of said table may be varied automatically, said tensioning means comprising bolts and springs.

15. In a device comprising a bed, a fixed coact-ing mechanism thereon, a movable coacting mechanism thereon and an intermediate table variable without adjustment, as the distance between said mechanisms is varied, said table comprising chain strands attached atone end to brackets fixed at table ieight upon said immovable mechanism, an arcuate support on said movable mechanism adapted to hold said chain strands interme diate their ends at table height on said movable mechanism and adapted to permit a change in direction of said chain strands, a second obverse arcuate support upon said movable mechanism adapted to bring the direction of said chain strands back to the original but upon a different plane, an abutment upon said bed, tensioning means atfixed to said abutment and to the other end of said chain strands adapted to tension said chain strands and to hold that portion 015 themlying between said brackets and said supports in table like formation, said chain strands adapted to slide over said arcuate supports when said movable mechanism moved whereby by the movement of said movable mechanism the eflective length oi? said table may be varied automatically, said chain strands comprising links and connecting pins and fiber discs forming a non-marring conveyor thereof.

16. In a double shear, a bed, a fixed shear having a table thereon, a movable shear thereon, brackets affixed to the shear table of the immovable shear, chain strands afiixed at one end to said brackets, an arcuate support atfixed to said movable shear and adapted to support said chain strands at table height adjacent the shear table oi said movable shear and adapted to conduct said chain strands downwardly, a second obverse arcuate bracketupon said movable shear adapted again to change the direction of said chain strands whereby said chain strands are conducted beneath the shear table of said movable shear, an abutment on said bed beyond said movable shear, and tensioning means on said chain strand ends against said abutment. said chain strands adapted to slide over said arcuate supports during movement of said movable shear, said abutment and tensioning means being independent of said movable shear whereby when said movable shear is moved, the effective length of the intermediate table is varied without disturbing the tension thereof and without the necessity of separate adjustment.

17. In a double shear, a bed, a fixed shear having a table thereon, a movable shear thereon, brackets afiixed to the shear table of the immovable shear, chain strands atfixed at one end to said brackets, an arcuate support affixed to said movable shear and adapted to support said chain strandsat table height adjacent the shear table of said movable shear and adapted to conduct said chain strands downwardly, asecond obverse y arcuate support upon said movable [shear Y r adapted again to change the direction of said chain strands whereby said chain strands are conducted beneath the shear table of said 'movable shear, an abutment on said bed be yond said movableshear', and-'tensioning means'on said chain strand ends against said I abutment, said chain strands adapted toslide over said arcuate supports during movement of said movable shear said abutment and tensioning means being independent of said 1' movable shear whereby when said movable shear is moved, the effective length of the intermediate table is varied Without disturbing the tension thereof and without the necessity of separate adjustment, said chains comprising links and 'pins and fiber discs v a freely journalled on said pins whereby a nonmarring conveyor is formed of said intermediate table. a

. LEROY G. LEICHNER. 

